Results 21 to 30 of about 9,726 (203)

High-fraction brookite films from amorphous precursors [PDF]

open access: yesScientific Reports, 2017
AbstractStructure-specific synthesis processes are of key importance to the growth of polymorphic functional compounds such as TiO2, where material properties strongly depend on structure as well as chemistry. The robust growth of the brookite polymorph of TiO2, a promising photocatalyst, has been difficult in both powder and thin-film forms due to the
James E. S. Haggerty   +12 more
openaire   +5 more sources

Comparison on the TiO2 crystalline phases deposited via dip and spin coating using green sol–gel route

open access: yesJournal of Materials Research and Technology, 2019
TiO2 exist in three polymorphs known as anatase, rutile and brookite. Amongst these polymorphs, brookite are less reported and mostly produced as a by-product.
Nur Dalilah Johari   +3 more
doaj   +1 more source

Photocatalytic Degradation of Crystal Violet Dye under Visible Light by Fe-Doped TiO2 Prepared by Reverse-Micelle Sol–Gel Method

open access: yesNanomaterials, 2023
A reverse-micelle sol–gel method was chosen for the preparation of Fe-doped TiO2 samples that were employed in the photodegradation of the crystal violet dye under visible light irradiation in a batch reactor.
Antonietta Mancuso   +7 more
doaj   +1 more source

Brookite versus anatase TiO2 photocatalysts: Phase transformations and photocatalytic activities [PDF]

open access: yes, 2013
Titanium dioxide nanoparticles consisting of pure anatase, anatase-rich, brookite-rich, and pure brookite modifications were synthesized and characterized by X-ray diffraction, field emission-scanning electron microscopy and nitrogen adsorption.
Alkaim, Ayad   +3 more
core   +2 more sources

Application of reverse micelle sol-gel synthesis for bulk doping and heteroatoms Surface Enrichment in Mo-Doped TiO 2 nanoparticles [PDF]

open access: yes, 2019
TiO 2 nanoparticles containing 0.0, 1.0, 5.0, and 10.0 wt.% Mo were prepared by a reverse micelle template assisted sol-gel method allowing the dispersion of Mo atoms in the TiO 2 matrix.
Armandi, Marco   +8 more
core   +2 more sources

Catalytic coatings on steel for low-temperature propane prereforming to solid oxide fuel cell (SOFC) application [PDF]

open access: yes, 2009
Catalyst layers (4–20 lm) of rhodium (1 wt%) supported on alumina, titania, and ceria–zirconia (Ce0.5Zr0.5O2) were coated on stainless-steel corrugated sheets by dip-coating in very stable colloidal dispersions of nanoparticles in water.
Alphonse, Pierre, Ansart, Florence
core   +2 more sources

A polarizable interatomic force field for TiO$_2$ parameterized using density functional theory [PDF]

open access: yes, 2010
We report a classical interatomic force field for TiO$_2$, which has been parameterized using density functional theory forces, energies, and stresses in the rutile crystal structure.
E. P. Meagher   +9 more
core   +2 more sources

Synthesis of Brookite Titanium Dioxide Nanorods using Salt-Assisted Ultrasonic Spray Pyrolysis Process and their Photocatalytic Activities [PDF]

open access: yesArchives of Metallurgy and Materials
Here, We present the first-ever synthetic method based on the salt-assisted ultrasonic spray pyrolysis process of pure brookite TiO2 nanorods. H2TiF6 and NaNO3 were used as a titanium precursor and salt for the synthesis, the NaNO3 contributes to the ...
Hee Yeon Jeon   +4 more
doaj   +1 more source

Brookite, a sometimes under evaluated TiO2 polymorph

open access: yesRSC Advances, 2022
Brookite positively affects solar photocatalysis, electrocatalysis and electrochemical applications by stabilizing photogenerated e−/h+ pairs. Brookite-related heterojunctions, cus Ti atoms, surface acidity and redox behaviour are crucial aspects.
Manzoli M.   +3 more
openaire   +4 more sources

Effect of flow resistance in open rectangular channel [PDF]

open access: yes, 2016
The determination of flow resistance for open channels remains a challenge in practices. In this research, an experimental study was carried out to investigate the hydraulic roughness characteristics in an open channel.
Dini Mardhiyani, Dini Mardhiyani   +5 more
core   +3 more sources

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